Safety razor



Sept. 10, 1929. A. SCHMIDT 1,728,008

SAFETY RA-ZOR Original Filed 001;. '8, 1927 2 Sheet's$heet 1 p 1929- A.SCHMIDT 1,728,008

SAFETY mzoa Original Filed 001;. 8, 1927 a sheets-sheet 2 INVENTORPatented Sept. 10,1929.

- servin UNITED STATES PATENT OFFICE.-

1 am mm, or saw You, R. ir.

SAFETY RAZOR.

a iimien filed 0mma, 1927, serial no. aaeaav. Renewed June 7, me.

This invention relates to safet razors of all types,-wherei'n the razorbla e and suportmg plates are held in alignment with a flexible ide latewith a pin projectin from eac lengt wise portion and from bot surfaces,said pins on the flexible guide late as an ali ing member to hol therazor lads and t e su porting plates which may be loosely or rigid yattached to the handle of the razor and held in position with the pinson one surface of this guide plate, while the other supporting platebeingthe outer one is located on the pins of the ot er surface of thisguide plate; this outer supporting plate having a central threaded studthat extends toward the handle which is provided with a threaded bore toreceive this stud, and by this means the parts aforesaid are drawntogether with the flexible uide plate, into firm contact with each oter, to flex the blade so as to harmonize with the fixed curvature ofthese supporting plates, which may have any desired shape, such as astraight, and a curved side, or two straight edges, or both edgescurved, as the case may be.

It is a further object of the invention to provide a tension between thehandle and the threaded stud of the supporting plate, to enable thehandle to retain an adjusted osition, whereby the blade may be broug tto any degree of tightness between these supporting members to effect aclose shave, or varying cuts, depending on this adjustment, this tensionbeing produced by the ower applied to the threaded parts due to t e srin ing of both the razor blade and the exib e guide plate to the curvedform between the supporting plates.

It is a further object to provide a razor of this type that is simple inconstruction, easily assembled, or disassembled, the parts beingprincipally of stamping, can be produced at a low cost.

Other objects will appear in the following description, and pointed out,in the accompanying drawings.

In the drawings showing embodiments of invention:

i 1 is a perspective view of a razor showing t e blade supported betweentwo longitudinal curved supporting plates holding the blade with bothits cutting edges in acurved position. f

2- is a front end view.

F g. 3 is a plan view thereof.

Figs. 4 to 8 inclusive are perspective detail views of the componentparts to make up the razor.

Fig. 9 is a plan, view partly in section showing the blade held betweenthe support ing plates tohold the blade at one side to a straightcutting edge and at the other to a curved cutting edge. Fig. 10 is alongitudinal sectional view similar to Fig. 9 but showing the partsloosely engaging the handle. I I

Fig. 11 isa detail of the rear guard supporting plate as used in Fig. 10showing one of its edges curved and the other straight.

Fig. 12 is a plan view partly in section with the parts loosely engagingthe handle; in this form the blade is drawn to a curved position fromside to side to form straight cutting edges on both sides of the razor.

Fig. 13 is a cross section on line 13--13 of Fig. 12. s

Fig. 14 is a .detail of one of the parts.

Fig. 15 is a modification.

Figs. 16, 17, 18 and 19 are detail views.

. Fig. 20 is a cross section on line 20-2O of Fig. 15.

This invention comprises essentially a pair of supportin plates providedwith curved or straight e ges, between which the flexible razor blade isclamped, and a flexible guide plate with pins projectin from eachlengthwise portion to serve as a igning members to centralize these artswith one another as they are drawn toget er b a central threaded bore ofthe handle. In t e form shown' in Fi s. 1 to 8 inclusive, 9. doublesided longitudinally curved razor is shown provided with supporttheinner face 7 having approximately the same curvature as the wall 4 ofthe plate 2, when these arts are brought face to face. This plate al ohas elongated perforations 8, and a central opening 9 through which thethreaded stud may pass freely to connect with the threaded bore 10 of ahandle 11. This plate is wider than the plate 2 and the sides providedwith the usual safety notched edges. The razor blade 12 being ofconventional type but flexible, is perforated in a similar manner, witha central hole 13, and elongated holes 14. Means is provided to preventthe rotation of one part on the other, and also to align these parts toobtain perfect relation one with the other; this means being preferablyin the form of a flexible plate 15, having a central hole 16, and thepins 17 and 18 projecting from each lengthwise portion and surfaces ofthe plate. The pins 18 at the front coact with the slots 6 of plate 2,and the pins 17 For perforations 14 of the blade 12 and the holes 8 ofthe plate 3. It will be obvious when the parts are drawn together by thehandle and threaded stud 5, that the parts are aligned, and the flexibleguide plate and razor blade will assume its curved position between thesupporting plates 2 and 3, as indicated in Fig. 3, and the elongatedperforations of the several parts will permit of the longitudinalcurvature of this flexible guide plate and the pins 17 and 18 assume theradial positions shown in this figure.

The tension on the threaded stud and handle due to the flexing of theblade 12 and the flexible guide plate as these parts are drawn togetheris great enough to retain the handle, taut enough to bring the parts tonearly a close contact with each other, or fully up tight, as may bedesired. This is done to enable the user to shave closer, or regulatethe blade to a slight distance away from the tight contact of the parts,and reduce the close out of the blade, as will be readily understood. Inthis curved form of razor, the slight separation of the parts is foundin practice to affect the center portion of the blade at the cuttingedges in this curved form of razor, more than the end portions thereof,and by carefully guiding the razor at the desired cutting angle thus cutis fully under control of the user.

In Figs. 9. 10 and 11 the supporting plate 2 is bent to form a curvededge at one side as 20 and a straight edge at the opposite side as 21,and is of such thickness to retain this form when clamped up tight withits companion members. The flexible guide plate 15 and the blade 12 arethe same as in Figs. 5 and 6, flexible. The supporting plate 3 as shownin Fig. 10 is also bent to match with the plate 2 as shown in Fig. 11 inwhich the plate 3 has the curved notched edges 22 and the straightnotched edge 23 as shown in Fig.

' 9 when clamped between the handle and outer mesons supporting plate 2,so that all parts when brought together produce a razor having astraight cutting edge at one side, and a curved cutting edge at theother; providing a handy razor adapted for various shaped surfacesrequiring to be shaved.

In Figs. 12, 13 and 14 the blade is flexed into curved position curvedfrom side to side as indicated in Fig. 13, this View being a section online 13-43 of Fig. 12, but showing the parts drawn together to nearly atight contact between the supporting plates, while in Fig. 12 the partsare shown separated.

When the parts are drawn tightly together by the handle and threadedstud 5, the blade will lie close against the inner side to side curvedsurfaces 25 and 26 of the 'supporting plates, resulting in two straightoppositely disposed cutting edges, and when in this position is set forclose shaving, by regulating thehandle as before described. In theprevious forms by unscrewing the handle partly from the stud 5, theblade will spring away from the guard 3 as shown in Fig. 13 (shownsomewhat exaggerated), to the extent re quired, and by this meansregulate the cut.

In this case the flexible guide plate 15 will flex from side to side ofits length and have the same effect as in the other forms beforereferred to, to add a greater binding action on the threaded parts ofthe handle and stud to retain the parts for this adjusted position afterregulating the out.

From the foregoing it will be seen that the flexible guide plate 15performs two functions, the oppositely disposed pins align the parts tohold them in their relative position, and the flexibility of the platewill permit the pins to assume the angle required when clamped betweenthe various shapes of the inner surfaces of the supporting plates.

The pins 17 and 18 are preferably held to the plate by forming the pinswith a reduced portion passing through the holes in the plate, and asleeve of proper length on the reverse side of theplate fitting overthese reduced ends of the pins and riveted over to be permanently fixedthereto. This is clearly shown in Fig. 12 in which the sleeves areindicated at 18 and the reduced portion of the pins at 17'.

It is presumed to be novel to provide a razor with a curved and astraight edge by flexing the same blade between supporting members ofsuch fixed curvature to produce at one side, a curved cutting edge andat the other a straight cutting edge. To do this the flexible guideplate may be used as in Fig. 9 but I do not limit my invention to thisconstruction since the flexible guide plate with the pins may beomitted, and the pins be formed or aflixed to either of the supportingplates,-and draw the blade-into this curved relation to produce acombination curved and straight cutting blade.

31 and the uide pins 32 and 33 attached, see' Fig. 16. T is plate 30shows one side curved as at 34, and its opposite side straight as at 35,and the inner supporting plate '36 with the wall 37 thereof to conformapproximately to the inner wall 38 of the plate 30.

It will be seen I have provided a razor of all types whereby the bladecan be flexed into any desired form to produce a straight and a curvedcutting edge by the same blade at one clamped portion, or curvedlengthwise of the blade to produce, two curved cutting edges or twostraight cutting edges by flexing the blade, and by the addition of theflexible guide plate hold the parts in their proper relation and producea tension on the threaded stud of the supporting plate, by flexing thisflexible guide plate and the plate to hold these parts in any requiredposition after regulating the cut of the razor blade by springing theblade to and away from the supporting plate having the notched edges.

A further advantage of the flexible memhers is obtained by thestraightening to their normal flat condition which enables the parts tobe easily removed when releasing thehandle. for cleaning the parts.

I claim:

1. In a safety razor, a flexible razor blade having a centralperforation and an elongated vperforation at each lengthwise portion, apair of supporting plates longitudinally curved from end to end, one ofsaid supporting plates having a central threaded stud and an elongatedperforation at each lengthwise portion, the other supporting platehaving a central perforation and an elongated perforation at eachlengthwise portion and having the opposite longitudi nal edges notched,a flexible guide plate hav- 7 ing a central perforation and a pm in eachlengthwise portion projecting from both surfaces, said pins on onesurface of the flexible plate being arranged to pass through theelongated perforations of the razor blade and notched supporting plateand the pins on the other surface passing through the elongatedperforations of the plate arranged with the threaded stud and thethreaded stud of said latter plate passing throu h the centralperforation of the flexible guide plate, the razor blade and the notchededge supporting plate, and a'handle having a tireaded bore to receivethe threaded stud to draw the plates together and curve the flexibleplate and razor blade into the shape'of and firm contact with thelongitudinally curved supporting plates.

2. In a safety razor, a flexible razor blade having a centralperforation and an elongated perforation at each lengthwise portion, apair of supporting plates curved from side to side, one of said suporting plates having a central threaded stu perforation at eachlengthwise portion, and

the other supporting late having a central perforation and a per orationat each lengthwise portion and the opposite longitudinal edges notched,a flexible guide plate having a central perforation and a pin in eachlengthwise portion projecting from both surfaces, said pins on onesurface ofthe flexible plate being arranged to pass through theelongated perforations of the razor b ade and of the notched edgesupporting plate and the pins on the opposite surface passing throughthe perforations of the threaded stud carrying plate, with the threadedstud of said latter plate passing through the central perforation of theflexible guide plate, razor blade and notched edge su porting plate anda handle having a threa ed bore to receive the said stud to draw theplates together and curve the flexible plate and razor blade into theshape of and firm contact with the curved supporting plates.

3. In a safety razor, a flexible razor blade having a centralperforation and an elongated perforation at each lengthwise portion, apair of supporting plates, one side of each supporting ate being curvedsideways and the other si es of the two supporting plates being curvedsidewaps and lengthwise, one of said supporting p ates havm a centralthreadedstud and an elongate perforation at each lengthwise portion, andtheother supporting late havmg a central perforation and an e ongatederforation at each lengthwise portion and aving the oppositelongitudinal edges notched, a flexible guide plate having acentralperforation and having a pin rojected from both surfaces at each lenwise portion, said pins on one surface of t e flexib e plate passingthrou h the elonated perforations of the razor b ade and of t e notchedsupport-ing plate, and the pins on the other surface passing throu h theelongated perforations of the threa edstud carrying supporting plate,and the threaded stud passm through the central perforation of the flexile guide plate, the razor blade and thenotchy edged supporting plate,and

,a handle having a threaded bore to receive the threaded stud to drawthe plates together and curve the flexible plate and razor blade intothe shape of and firm contact with the sildiways and lengthwise curvedsupporting p a es,

4. In a safety razor, a flexible razor blade having a centralperforation and an elongated perforation at each lengthwise portion, apair of supporting plates, one side of each supporting p ate bemg curvedsideways and the other side of the two supporting plates curved sidewaysand lengthwise, one of said supporting plates having a threaded stud atits center and a pin at each lengthwise porat the center and a tion, andthe other supporting plate having a central perforation and aperforation at each lengthwise portion and the opposite longitudinaledges notched, the pins at the lengthwise portion of thethreaded studcarrying plate passing throu h the erforation of the razor blade and oft e notc ed edge supporting plate, and a handle havin a threaded bore toreceive the threaded stu to draw the parts together and curve theflexible razor blade into the shape of and firm contact with thesupporting plates.

5. In a safety razor, a flexible guide plate having a centralperforation and havin a pin projected from each lengthwise portion andsurfaces.

6. In a safety razor, a flexible guide plate arranged with pinsprojecting from both surfaces.

7. In a safety razor, a flexible guide plate, having a perforation andpins fixed in the plate projecting from both surfaces.

ARTHUR SCHMIDT.

